Gas-check and vent apparatus.



No. 738,095. PATBNTED SEPT. 1, 1903.

R. BYERS. GAS CHECK AND VENT APPARATUS.

APPLICATION FILED MAR. 18. 1903.

R0 MODEL.

QwHM mooeo M I 3513 flbtoani jLi lgg I Patented September 1, 1903.

PATENT OFFICE.

ROBERT BYERS, OF NFAV YORK, N. Y.

GAS-CHECK AND VENT APPARATUS.

SPECIFICATION forming part of Letters Patent No. 738,095, dated September 1, 1903.

Application filed March 18, 1903. $erial No. 148,850. (No model.)

To aZZ whom it may concern.-

Be it known that I, ROBERT BYERS, a citizen of the United States of America, and a resident of the borough of Manhattan, New- York city, State of New York, have invented certain new and useful Improvements in Gas- Gheck and Vent Apparatus, of which the following is a specification.

My invention comprises a device adapted for checking the regurgitating action of gas on the meter which sometimes occurs and effects erroneous register of measure and also adapted for the purposes of a vent-cock for steam and hot-water registers, the said device being interchangeable for either use, as hereinafter described, reference being made to the accompanying drawings, in which- Figure 1 is an elevation of a gas-meter with my improved device attached for preventing regurgitation of the gas. Fig. 2 is an elevation of a steam or hot-water radiator with my improved device employed for venting the same, the coupling-cap for connecting in a line of pipe being omitted. Fig. 3 is a longitudinal section of the same device. Fig. A is an end elevation of ',the device as seen looking at the left-hand end of Fig. 3. Figs. 5, 6, 7, 8, and 9, inclusive, represent several parts of the device in side view and detached from each other.

The case or body a of the device is in the form of a short tube internally threaded at each end like an ordinary pipe-coupling. A centrally and longitudinally perforated plug having a screw-threaded base I) and a taper part c is screwed into one end of said body a far enough beyond the end to admit the end of a gas-pipe, as d, or a nipple, as e, to be screwed in at f for connecting the device to a meter 9 or .to a radiator h, the point of said plug being directed inward of the case. A conical valve 2 having a taper socket j in the base, adapted to lit the taper c of the plug, is applied to the taper in nor end of said plug. A plug 7c is screwed into the other end of case a, which is centrally perforated at Z, said perforation being suitably flared at the inner end to form a taper seat 0 for the point of valve i. The plug 7a has other perforations on, and it has a flange n, such as maybe used with the cap 0 of an ordinary pipe-union, for connecting the device to a section 13 of gaspipe leading from the meter. may have a milled edge, as represented in Fig. 2, to facilitate manipulating the plug when the device is used for venting a radiator or other thing to be vent-ed.

When used as a gas-check, the plug 19 0 will be adjusted relatively to plug 70, so that valve 1' may have a little play forward and backward between point 0 and seat 0, allowing said valve to be opened by the gas-pressure under the valve for free outflow. It will be seen that regurgitating pressure of the gas will close valvec'on point 0 and prevent return fiowinto the meter of gas having once passed and been registered and being registered again, which is a peculiarity of elastic vapors under light pressure. When the device is to be used for a vent, plug 6 c is to be set farther into case a, so that plug on being screwed home will close valve 2' on point 0 and prevent outflow, but will be opened by the pressure behind it when the plug is slightly slackened and allow the vent operation to take place.

Thus I have provided in one simple construction a device which is applicable for two difierent effects without change, except the slight different adjustment of the plug 7) c, and this adjustment is alike useful in setting it relatively to plug 70 for both uses, in one case being to allow the play for the opening of the valve and in the other case for enabling the plug it to come tight in the end of case 0: at the same time that the valve z'closes tight on point 0.

What I claim as my invention is- 1. The combination of the tubular case internally screw-threaded at each end, longitudinally-perforated taper plug set adj ustably in one end of said case beyond the extremity of the case and with its point inward, the conical and taper-socketed valve on said taper point of said plug, another longitudinallyperforated plug threaded in the other end of said case, and having a flange-head and adapted to control said valve relatively to the taper plug.

2. The combination of the tubular case internally screw-threaded at each end, longitu- This flange Y ILO :3 reaper;

dinally-perforated taper plug set adjustably taper plug and a pipe-union-joint cap 011 said in one end of said case beyond the extremity plug. 10 of the case and with its point inward, the con Signed at New York this 5th day of March, ical and taper-sooketed valve on said taper 1903.

point of said plug, another longitudinally- ROBERT BYERS. perforated plug threaded in the other end of I VViinesses:

said case and having a flange head and C. SEDGWICK, adapted to cont-r01 said valve relatively to the A. P. THAYER. 

